Abstract
As advances in aberration-corrected transmission electron microscopy (TEM) have enabled the determination of the three-dimensional structure and local electronic properties of nanostructures with the sub-angstrom resolution, the recent development of in situ TEM techniques allows one to study the dynamic response of defects and interfaces to applied fields and changes in environments, while the atomic structure is imaged directly. In this talk, the speaker will present his group’s recent work on in situ TEM studies of the atomic structure, local electronic properties, and dynamic behaviors of nanostructured functional materials, including the nucleation and growth of ferroelectric domains during switching under applied electrical field or mechanical stress, oxidation/reduction of self-regenerating catalysts within a gas-reaction holder, and structural evolution of lithium-ion battery materials, and filament formation in resistance switching memories.
About the speaker
Prof Xiaoqing Pan received his PhD in Solid State Physics from Saarland University in 1991. After postdoctoral research at the Max-Planck Institut für Metallforschung in Stuttgar, he joined the faculty of Department of Materials Science and Engineering at University of Michigan in 1996. He was appointed as the Richard F. and Eleanor A. Towner Professor of Engineering and the Director of Electron Microbeam Analysis Laboratory at Michigan. He then moved to University of California at Irvine in 2014 and is currently the Professor and Henry Samueli Endowed Chair in Engineering in Department of Chemical Engineering & Materials Science and Department of Physics & Astronomy. He is also the inaugural Director of the Irvine Materials Research Institute (IMRI).
Prof Pan's research focuses on understanding the atomic-scale structure-property relationships of advanced functional materials, including oxide electronics, ferroelectrics and multiferroics, and catalysts. He is recognized internationally for his work in electron microscopy that has led to the discovery of new properties and novel functionalities in these technologically important materials.
Prof Pan has received awards including the Faculty Early Career Development (CAREER) Award of US National Science Foundation and the Outstanding Young Investigator Award of Chinese National Science Foundation. He was an overseas member of the Scientific Review Board of the Chinese Academy of Sciences in 2005 to 2010 and has been serving as a member on the Advisory Committee of the Overseas Chinese Affairs Office of the State Council of China since 2011. He is a Fellow of the American Ceramic Society, American Physical Society and Microscopy Society of America. He has also published over 200 peer-reviewed scientific papers in scholarly high impact factor journals including Nature, Science, Nature Materials, Nature Communications, Physical Review Letters, Nano Letters, and Advanced Materials.
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